Your guide to the Solar System and the night sky
Latest Perseverance Images received 1 hours 53 mins ago for Sol277, Sol276, Sol208, Sol207, Sol206, Sol205, Sol204, Sol203, Sol202, Sol198
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

ε Trianguli Australis (epsilon Trianguli Australis)

ε Trianguli Australis is a double giant star in the constellation of Triangulum Australe.

ε Trianguli Australis visual magnitude is 4.11. Because of its moderate brightness, ε Trianguli Australis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ε Trianguli Australis:

4.11
Giant
ε Trianguli Australis (epsilon Trianguli Australis) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of ε Trianguli Australis

ε Trianguli Australis is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ε Trianguli Australis are provided in the following table:

15h 36m 43s
-66° 19’ 00”
318.49°
-8.57°
Triangulum Australe

The simplified sky map below shows the position of ε Trianguli Australis in the sky:

Finder chart ε Trianguli Australis (epsilon Trianguli Australis) star
Simplified finder chart for ε Trianguli Australis (epsilon Trianguli Australis).

Visibility of ε Trianguli Australis from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

ε Trianguli Australis (epsilon Trianguli Australis) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of ε Trianguli Australis

The image below is a photograph of ε Trianguli Australis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of ε Trianguli Australis is 0.023 arcsec per year in Right Ascension and -0.055 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ε Trianguli Australis (epsilon Trianguli Australis) star
DSS2 image of ε Trianguli Australis. The red arrow shows the motion of ε Trianguli Australis during the next 10000 years (3.83 arcmin in Right Ascension and -9.17 arcmin in declination);

Distance of ε Trianguli Australis from the Sun and relative movement

ε Trianguli Australis is distant 216.04 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

66.27 pc
216.04 ly
-16 km/s
0.023 arcsec/year
-0.055 arcsec/year

Spectral properties of ε Trianguli Australis

ε Trianguli Australis belongs to spectral class K1 and has a luminosity class of III corresponding to a giant star.

0.00
K1III
4368K

The red dot in the diagram below shows where ε Trianguli Australis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ε Trianguli Australis. Attribution: Richard Powell / CC BY-SA

ε Trianguli Australis star system properties

ε Trianguli Australis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ε Trianguli Australis double sysyem:

4.11
9.51
5.4
83.2 arcsec

Alternative designations of ε Trianguli Australis

ε Trianguli Australis
(epsilon Trianguli Australis)
SAO253226
SAO253226